As chemistry exam question help
This question is about acid–base titrations.
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
Original post by LOST_CASEXOXO
This question is about acid–base titrations.
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
For the first question you need to discuss weighing by difference.
For the second work out moles of acid using mass and Mr then concentration using these moles and the given volume. Don't forget to convert cm3 to dm3
Original post by LOST_CASEXOXO
This question is about acid–base titrations.
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
hi could you please send more questions
Original post by LOST_CASEXOXO
This question is about acid–base titrations.
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
Citric acid reacts with sodium hydroxide.
C6H8O7(aq) + 3NaOH(aq) → Na3C6H5O7(aq) + 3H2O(l)
0 2 . 1 A student makes a solution of citric acid by dissolving some solid citric acid in water.
Describe a method to add an accurately known mass of solid to a beaker to make
a solution.
[2 marks]
0 2 . 2 The student dissolves 0.834 g of citric acid in water and makes the solution up to
500 cm3
Calculate the concentration, in mol dm–3, of citric acid in this solution.
[3 marks]
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